minecraft server 1.14.3 crash report seys "Exception in server tick loop" please help me

her is the full crash report

---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 12:33 15/08/19
Description: Exception in server tick loop

com.google.gson.JsonParseException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 2 path $[0]
    at zp.a(SourceFile:507)
    at zp.a(SourceFile:523)
    at xx.g(SourceFile:146)
    at uh.z(SourceFile:98)
    at uh.<init>(SourceFile:25)
    at ui.d(SourceFile:185)
    at net.minecraft.server.MinecraftServer.run(SourceFile:604)
    at java.lang.Thread.run(Unknown Source)
Caused by: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 2 path $[0]
    at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1559)
    at com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1401)
    at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:593)
    at com.google.gson.stream.JsonReader.hasNext(JsonReader.java:414)
    at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:81)
    at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61)
    at zp.a(SourceFile:505)
    ... 7 more

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
    Minecraft Version: 1.14.3
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_221, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 2811502832 bytes (2681 MB) / 3087007744 bytes (2944 MB) up to 3087007744 bytes (2944 MB)
    JVM Flags: 2 total; -Xmx3072M -Xms3072M
    Data Packs: 
    Is Modded: Unknown (can't tell)
    Type: Dedicated Server (map_server.txt)